Mac only lasts 2 hours; used to be 4!

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oddiegg Author

Level 1

4 points

Mac only lasts 2 hours; used to be 4!

I have a mac OS X ver. 10.7.5.

Last night I discovered that even after charging to 100%, the batttery only lasts 2 hours or a little more,

when it used to be good for 4 or close to 5.

I had the battery tested but nothing seems to be wrong with it.

I looked at the Activity Monitor also and checked the cpu like it said on one of the other discussions... nothing seems to be out of order...

Right now it's even more confusing because at times the battery bar in the menu will say 4:05 remaining at 90% but suddenly change to 2:23 or something at 90% and back and forth.

I have been using Final Cut Pro lately and the computer became hot and loud at times because of it -- could it have something to do with what I'm having trouble now?

Final Cut Pro X, Mac OS X (10.7.5)

Posted on Nov 11, 2013 10:31 AM

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Answer 1

Best reply

dalstott

Level 4

2,639 points

Nov 11, 2013 11:44 AM in response to oddiegg

What kind of Mac do you have and what year is it. Below are links to battery info that you can gather and include is a response..

http://support.apple.com/kb/HT1446

http://support.apple.com/kb/HT1519

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Answer 2

oddiegg Author

Level 1

4 points

Nov 11, 2013 1:30 PM in response to dalstott

2012, macbook pro. 15 in...

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Answer 3

dalstott

Level 4

2,639 points

Nov 11, 2013 6:39 PM in response to oddiegg

When things get crazy with a newer mac like yours it may help to reset the SMC. Some links below on how and why to do this.

http://support.apple.com/kb/HT3964

http://thenextweb.com/lifehacks/2010/12/04/how-when-why-to-reset-the-pram-smc-on -your-mac/

http://gigaom.com/2011/07/26/when-to-reset-your-macs-pram-and-smc/

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Answer 4

oddiegg Author

Level 1

4 points

Nov 12, 2013 7:27 PM in response to dalstott

Hello, thank you so much for your help so far.

I've tried resetting the SMC as well as PRAM but I'm not absolutley positive whether this has worked or not justy et. I'm just really nervous it'll pretend it's alright for a while then go back to what it was before haha...

My battery says its condition is Normal, so ideally it shouldn't be having this kind of problem, right...?

But thank you nontheless!

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Answer 5

Nov 12, 2013 8:52 PM in response to oddiegg

You should also ask this in the MacBook Pro forum. This is the forum for the 13” white and black plastic MacBooks that were discontinued in 2010. You should also post this question there to increase your chances of getting an answer.
https://discussions.apple.com/community/notebooks/macbook_pro

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